bjoernager/rust
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This commit is contained in:
Ariel Ben-Yehuda 2019-07-27 20:44:14 +03:00
parent 1ec7ae14fa
commit b5665e811b
2 changed files with 2 additions and 2 deletions
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2
src/librustc/traits/select.rs
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@ -1326,7 +1326,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
(result, dep_node) (result, dep_node)
} }
// Treat negative impls as unimplemented, and reservation impls as Ok(None) // Treat negative impls as unimplemented, and reservation impls as ambiguity.
fn filter_negative_and_reservation_impls( fn filter_negative_and_reservation_impls(
&self, &self,
candidate: SelectionCandidate<'tcx>, candidate: SelectionCandidate<'tcx>,

2
src/librustc/ty/mod.rs
View file

@ -2931,7 +2931,7 @@ impl<'tcx> TyCtxt<'tcx> {
} }
(ImplPolarity::Positive, ImplPolarity::Negative) | (ImplPolarity::Positive, ImplPolarity::Negative) |
(ImplPolarity::Negative, ImplPolarity::Positive) => { (ImplPolarity::Negative, ImplPolarity::Positive) => {
// FIXME: when can this happen? // `impl AutoTrait for Type` + `impl !AutoTrait for Type`
debug!("impls_are_allowed_to_overlap({:?}, {:?}) - None (differing polarities)", debug!("impls_are_allowed_to_overlap({:?}, {:?}) - None (differing polarities)",
def_id1, def_id2); def_id1, def_id2);
return None; return None;